Calipers.



A. V. BSPINAL.

, OALIPERS.

APPLIOATION FILED JUNE z5, 1914.

Patented Mm. 9, 19E 5.

ANTONIO VELEZ ESPINALDF BNES, CUBA.

CALIPERS.

Specification of Letters Patent.

Patented Mar.. 9, 1915.

Application filed .Tune 25, 1914. Serial No. 847,232.

T0 all w/zom t may concern:

Be it known that I, ANTONIO VELEZ ESPI- NAL, a subject of the King of Spain, and a resident of Bancs, in the-Province of Oriente, Republic of Cuba, have invented certain new and useful Improvements in Calipers, of which the following is aspeciication.

My invention relates to calipers and the object thereof is to provide such a tool which is adapted for use as a point compass, eX- terior and interior cone calipers, for determining angles of irregular articles' or objects, for determining the over-all diameters of exterior or interior screw-threads. and for a multiplicity of purposes, and which may also be folded into a very compact form for storing when not in use. y

My invention is fully described in the following. specification, of which the accompanying drawings form a part, in which the separate parts are designated by the same reference characters in each of the views, and in which Figure 1 is a view tion for use as dividers; Fig. 2 is a section taken on the line 2-2 of Fig. 1; Fig. 3 is a view'thereof when set to gage the external dimensions of a cone; and Fig. 4: is a view thereof when set to gage the inclination of one surface with respect to another.

In the drawings forming a part of this l application I have shown a device of this class comprising two arms 10 and 11, pivoted together at 12, and to a brace member 13 at 14 and 15, respectively, the pivot 14 being preferably a permanent pivot 15 is provided with a thumb-nut 16 Also for locking the arm 11 and brace 13 together against movement. the'pivot pin 15 Being slidable in .a slot 17 in the brace 13. pivoted at 14'is a leg or point 18, a similar leger point 19 being pivoted at 15 and movable along the brace 13 with the pivot pin 15, as clearly illustrated, and it will be seen` that the arm 10, brace 13, and point 18 are each independently movable on the pivot 14 whereas the arm 11, brace 13,

and point l9-are independently movable on the pivot 15 but only 'when the thumb-nut the device however,

of my device in posi` one, whereas the -v 16'is released, and said thumb-nut also maintains the arm 10 and brace 13 in relationship when tightened on its pivot pin 15.

The arms 10 and 11 are preferably of the same length, as are also the legs 18 and 19, the latter being tapered from\the transverse plane of the pivot 14 to their ends uniformly, and this angularity is of advantage in many of the uses to which my device may be put, particularly where the determination of angles is required, as clearly illustrated in Figs. 3 and 4, and my device may be locked in any of its possible set Y positions by means of the thumb-nut 16.

The angular relationshippf surfaces remote from each other, within the. limits of may be determined, as may also those of adjacent surfaces. the interior inclination of portions of hollowy ob- -iects also being readily determined, this being a highly important possibility to the use of my device and not possible to any others which I have seen.

It will thus be seen that my device permits a very lwide and comprehensive use, and for many different purposes, and the device may he readily folded into a form relatively as compact as a pocket-knife, and, in the position shown in Fig. 1, it may also be used as a seriber, a suitable pencil or other marker being employed therewith, al-

though not shown.

IVhile I have shown my present preferred form of construction, do not desire to limit myself thereto, but may make alterations therein and modifications thereof, within the scope #of tle following claim, without departing from the spirit of my invention, or sacrificing its advantages and, with such reservation,

What I claim as new, and desire to secure by Letters Patent, is

A device of the class described, comprising two similar arms, a pivot passed through one end of each arm,l a'leg for each arm provided with a pointed end and a pivot passed through the opposite end and through the corresponding arm, at the outer end thereof,V

connection with the joint of the other arm name to this specification in the presence f alrlld leg, each gf said legs bing foldzllble on the subscribing Witnesses. 4 t e corres on in arm to e .entire contained-within thegedges of said arm, :13nd be ANTONIO VELEZ ESPINAL' 5 ing revoluble through incomplete circle on Witnesses:

the corresponding pivot. HERMANN ROTH, In testimony whereof I have signed my H. C. MORGAN.

Copies of this patent may be obtalined for ve cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

